Statistics for laboratory scientists

Solutions for the homework problems for lecture 19

1. The R code is simply binom.test(16,45).

   We obtain P = 0.072, and conclude that the proportion, p, could reasonably be 1/2.

2. Again, we use binom.test(16,45).

   The 95% confidence interval for p is (0.22, 0.51).

3. In R, type binom.test(15,15).

   The 95% confidence interval for p is (0.78, 1.00).

   Note that the lower confidence limit could be obtained, in R, by 0.025^(1/15).

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Last modified: Thu Mar 2 13:03:44 EST 2006